// Set the content view according to the position of the app bar.
if (bottomAppBar) setContentView(R.layout.main_framelayout_bottom_appbar);
else setContentView(R.layout.main_framelayout_top_appbar);
// Set the content view according to the position of the app bar.
if (bottomAppBar) setContentView(R.layout.main_framelayout_bottom_appbar);
else setContentView(R.layout.main_framelayout_top_appbar);